refactoring: balance sheet report.

refactoring: trial balance sheet report.
refactoring: general ledger report.
refactoring: journal report.
refactoring: P&L report.

server/src/services/FinancialStatements/FinancialSheet.ts

@@ -0,0 +1,16 @@
+import {
+  formatNumber
+} from 'utils';
+
+export default class FinancialSheet {
+  numberFormat: { noCents: boolean, divideOn1000: boolean };
+
+  /**
+   * Formating amount based on the given report query.
+   * @param {number} number 
+   * @return {string}
+   */
+  protected formatNumber(number): string {
+    return formatNumber(number, this.numberFormat);
+  }
+}